Strain release for wringers



Jan. 7, 1936.

STRAIN RELEASE FOR WRINGERS E. H. ERDMAN 2,027,335

y l v10 l1 lll l INVENToR Earl H. Erdman ATTORNEYS E. H. ERDMAN STRAIN RELEASE FOR WRINGERS Filed .nine 11, 1954l 2 Sheets-Shes?l 2 j?, la5 aa INVENTOR.

Earl H.E'zdman,

BYv

ATTORNEYS yPatented Jan# 7 '1936 i.

STRAIN RELEASE Fon wnrNGEns Earl H. Erdman, Salem, Ohio, assigner to Mulu lins Manufacturing Corporation, Salem, Ohio, a corporation of, New York Application June 11, 1934, Serial No. 729,977 s claims. (c1. 10s-sz) I 'I'he object of my invention is to produce a `wringer wherein the normal working pressure maintained between the coacting rollers may be surely and quickly released by the operator in case of need. 'I'he accompanying drawings illustrate my invention.

Fig. 1 is a iront elevation in partial vertical y medial section;

Fig. 2- is a fragmentary elevation of one end of the structure, showing the releasable latchin'g means;

Fig. 3 is a fragmentary section on llne 3-3 of Fig. 1; i

' l5 Fig. 4 is a front elevation, in partial vertical medial section, of akmodiiication, and

Fig.- 5 is-a vfragmentary end elevation of the modification shown in Fig. 4.

In the 'drawings III indicatesthe vmain base frame of the wringer, this frame comprising channeled end stiles II, Il' within which the usual bearing blocks I2 and I 3 for the rollers I4 and I5 respectively, are slidably mounted. The upper ends of the stiles are lopen, to permit ready withdrawal of the rollers and bearing blocks.

Coacting with the upper ends of the stiles Il,

II is a channeled crosshead I6 within which is .arranged the pressure spring I1 adapted to en- 0 gage the upper bearing blocks la, said spring, at,

its middle, engaging the adjustable abutment screw I8.

The outer face of the stile II is provided near its upper end, with a projection 2G beneath which 5 a portion 2I of crosshead I6 may be hooked, and

from which said portion may be readily separated byan upward swing of the opposite end of the crosshead.

The outer face of the stile II is provided near 40 its upper end with an outwardly-projecting pin- 25 and the adjacent end of crosshead I 6 is provided with a headedlpin 23 upon which are jour- .naled the two latches 21 and 28, each of which comprises a depending arm notched at its inner 5 end as indicated at 29, and with an upper arm notched at on its inner edge to form a linger 3 I Theweight ofv the lower end of each armv21 and 23 is greaterthan the weight of the upper end so thatgravity will serve to normally urge 50 the two arms 21 and za to the reianvepositlons shown in Fig. 2, and inthese positions the adjacent ends oi the lingers 3I, 3l -are separated by an amount equal to the width of a comparatively thin blocking flnger 3i which is carried by -a 5 rocker-arm 34 which 'straddles one end of cross-,-

head I6. The opposite end of head I6 is straddled by a similar rocker-arm 36 (lacking nger and the two rocker Aarms are connected into a unitary rockable structure by channeled bars 36", 36'?. The rocker-arm structure is yieldingly held on head I6 by headed pins 31, 31 which are passed through arms 33, 36 and crosshead I6 and are each yieldingly held in place by a light spring 33 which, at its inner end, abuts an abutment 39A carried by pin 31.l0

In the form shown in Figs. 4 and 5 ringer 35 is carried by a plate 33x having a yoke 40 which carries an upwardly-projecting arm 4I upon the upper end of which is secured a. manipulating Cil head 42 which is preferably of soft rubber ox l5 other similar material which may be struck a considerable blow by the hand of an operator without injuring the hand.

In order to preventz head I6 from beingl projected entirely free from the base, wheniinger 20 35 is withdrawn from betweenlatches 21 and 28, the construction shown in detail ln Fig. 3 has been found desirable.

A U-shaped clip 45 straddles bearing block I3 vin standards II and II' and at the roots of its 25 arms 46 is provided with outwardiyfproject-ng fingers 41, 41 .which rest upon inwardly-projecting fingers 48, 48 carried by the upper ends of the iront and rear walls of standards II and o II'. 3 Each arm 43 is provided with an outwardly= projecting lip .43 which underlies one of, fingers 48 and is normally spaced some distance below the plane oi ngers 43, as shown. The ends of spring I1 underlie the bases of. clips 45. 35 When cross head I6 is released and projected upwardly by spring l1, lips 43v rise'into engage ment with fingers 43. To fully release crosshead I6 arms 44 may be sprung toward each other enough to permit lips 48 to clear iingers 48. 40.

In operation (referring to Figs. 1 and 2), the lett-hand end of crosshead I3 having lts portion 2| hooked under projection 20, the operator grasping head I3 and one of bars 38" will withdraw ilnger 35 from between fingers 3l and will 45 urge the right-hand end of the crosshead downwardly over the upper end of stile II lto bring the lower ends of latches 21 and 23' to underlie pin 23,'whereupon release of the lateral pressure upon bar 33 iinger 35 will move down between 50 fingers .3-I, 3l to block swinging movement of I v the latches 21 and 23, so that the right-hand end of the croeshead will thereby be looked in oper-y ative position. v y

slight pressure upon Aeither bar 36" will rock 55 arms 36, 36' to tilt ringer 35 from between fingers 3| so that the upward force of spring I1 cams the latch nngers 21 and 28 away from pin 25.

Referring now to the form shown in Figs. 4 and 5. v

Whenever it is desired to release the pressure of spring I1 upon the upper roller I5 the operator has merely to stroke head 42 from any direction so as to tilt finger 35. Tilting in one direction will withdraw said nger upwardly from between fingers 3| in another direction will depress finger 35 into notches 33; and canting of iinger 35 between fingers 3|, to one side or the other, will serve to decentralize the ringer 35 relative to ngers 3| so that the camming effect induced by spring I1 upon pin 25 through the lower sides of the notches 29 will serve to force the lower ends of the latches 21 and 28 away from each other, the fingers 3| pinching the canted finger 35 between themselves. In any event, dislocation of nger35 from its critical blocking position between fingers 3| will permit withdrawal ofV the lower ends of the latches 21, 28 from pin 25, and consequent release of the right-hand end of the crosshead I6.

It will be noted that the connection between arm 36 and crosshead I6 is a sort of universal joint, the construction being such that displacement of head 42 by a force supplied from any .direction will serve to so dislocate ringer 35 relative to fingers 3| that it is no longer capable of successfully blocking outward swing of the lower ends of the latches 21 and 28.

I claim as my invention:

1. In a wringer, the combination with a rollersupporting base and an associated crosshead, vertically-interlocking means carried by the base and one end of the cross head, and releasable latching means interposed between the other end of the crosshead and the base, said latching means comprising a pair of cooperating latches pivoted upon the crosshead on a substantially horizontal axis, a pin carried by the base in position to be underlaid by the latches, ay blockinglinger interposable between the latches to maintain pin engagement thereof, andv an element associated with said last-mentioned ringer by which said finger may be retracted from blocking position.'

2. A wringer of the character specied in claim 1 wherein the blocking-nnger is carried by a rocker structure rockably mounted upon the crosshead and having manipulating portions extending lengthwise of the crosshead.

3. A wringer construction of the character specified in claim 1 wherein the blocking ringer is carried by a plate mounted upon the crosshead and tiltable thereon in various planes.` Y

4. In a wringer comprising a base frame element and a crosshead frame element, verticallyinterlockable means carried by the base frame element and the crosshead frame element at adjacent ends, and releasable latching means arranged at the opposite end of said frame members and comprising a pair of coacting latch levers pivotally mounted upon one of the frame members, a coacting pin carried by the other frame member in position to be straddled and vertically overlapped by the latch levers, a latch-lever blocking-ringer carried by one of the frame members, and means movably mounted upon one of the frame members and associated with said blocking-ringer whereby it may be retracted from blocking position relative to the latch levers.

5. In a wringer, a base having a hollow end standard open at its upper end, a. verticallyreciprocable bearing-block mounted therein, and an inverted U-shaped restraining clip comprising a pair of spring arms straddling said block, said clip having portions restable upon the base standard and outwardly projecting portions carried by the spring arms and spaced normally below and out of contact with and vertically interlockable with portions carried by the base standard.

6. In a wringer, the combination with a crosshead'irame element, of a latch release comprising a pair of inverted U-shaped elements saddled upon the opposite ends of the crosshead and connected by bars paralleling the crosshead, two pins, one projecting through each U-shaped element and the crosshead, two springs, one associated with each pin and yieldingly acting upon its pin/axially, and a pair of pivoted latch elements normally blockable by a portion carried by one of said U-shaped elements.

EARL H. ERDMAN. 

